berendjan

i have the same issue, i think its because the repo is cloned with --bare. So there is no .git directory or index file. But not sure

Hi @ikhoon, we're also encountering the problem but only when using plugins. As noted in the [code base](https://github.com/protocolbuffers/protobuf/blob/3e1967e10be786062ccd026275866c3aef487eba/src/google/protobuf/descriptor.cc#L6720): _"json_name option is not allowed on extension fields. Note that the json_name...